Philips Hue outdoor PIR sensor lux reporting difference

hi there,
I have two hue outdoor PIR sensors both setup using Zigbee2MQTT, on seems to report lux values 10 times higher than the other. For example, when it is mostly sunny but not it direct sun light, one reports the lux value to be about 700, the other 7000.

any ideas on how i can correct this?

Thanks